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Introduction to Networks Companion Guide v5.1

Book Description

Introduction to Networks Companion Guide v5.1 is the official supplemental textbook for the Introduction to Networks course in the Cisco® Networking Academy® CCNA® Routing and Switching curriculum. The course introduces the architecture, structure, functions, components, and models of the Internet and computer networks. The principles of IP addressing and fundamentals of Ethernet concepts, media, and operations are introduced to provide a foundation for the curriculum. By the end of the course, you will be able to build simple LANs, perform basic configurations for routers and switches, and implement IP addressing schemes.

The Companion Guide is designed as a portable desk reference to use anytime, anywhere to reinforce the material from the course and organize your time.

The book’s features help you focus on important concepts to succeed in this course:

  • Chapter Objectives—Review core concepts by answering the focus questions listed at the beginning of each chapter.

  • Key Terms—Refer to the lists of networking vocabulary introduced and highlighted in context in each chapter.

  • Glossary—Consult the comprehensive Glossary with more than 250 terms.

  • Summary of Activities and Labs—Maximize your study time with this complete list of all associated practice exercises at the end of each chapter.

  • Check Your Understanding—Evaluate your readiness with the end-ofchapter questions that match the style of questions you see in the online course quizzes. The answer key explains each answer.

  • Table of Contents

    1. About This E-Book
    2. Title Page
    3. Copyright Page
    4. About the Contributing Authors
    5. Contents at a Glance
    6. Contents
    7. Syntax Conventions
    8. Introduction
      1. Who Should Read This Book
      2. Book Features
        1. Topic Coverage
        2. Readability
        3. Practice
        4. Lab Manual
        5. About Packet Tracer Software and Activities
      3. How This Book Is Organized
    9. Chapter 1. Explore the Network
      1. Objectives
      2. Key Terms
      3. Introduction (1.0.1.1)
      4. Globally Connected (1.1)
        1. Networking Today (1.1.1)
        2. Providing Resources in a Network (1.1.2)
      5. LANs, WANs, and the Internet (1.2)
        1. Network Components (1.2.1)
        2. LANs and WANs (1.2.2)
        3. The Internet, Intranets, and Extranets (1.2.3)
        4. Internet Connections (1.2.4)
      6. The Network as a Platform (1.3)
        1. Converged Networks (1.3.1)
        2. Reliable Network (1.3.2)
      7. The Changing Network Environment (1.4)
        1. Network Trends (1.4.1)
        2. Networking Technologies for the Home (1.4.2)
        3. Network Security (1.4.3)
        4. Network Architecture (1.4.4)
      8. Summary (1.5)
      9. Practice
      10. Check Your Understanding Questions
    10. Chapter 2. Configure a Network Operating System
      1. Objectives
      2. Key Terms
      3. Introduction (2.0.1.1)
      4. IOS Bootcamp (2.1)
        1. Cisco IOS (2.1.1)
        2. Cisco IOS Access (2.1.2)
        3. Navigate the IOS (2.1.3)
        4. The Command Structure (2.1.4)
      5. Basic Device Configuration (2.2)
        1. Hostnames (2.2.1)
        2. Limit Access to Device Configurations (2.2.2)
        3. Save Configurations (2.2.3)
      6. Address Schemes (2.3)
        1. Ports and Addresses (2.3.1)
        2. Configure IP Addressing (2.3.2)
      7. Verifying Connectivity (2.3.3)
      8. Summary (2.4)
      9. Practice
      10. Check Your Understanding Questions
    11. Chapter 3. Network Protocols and Communications
      1. Objectives
      2. Key Terms
      3. Introduction (3.0)
      4. Rules of Communication (3.1)
        1. The Rules (3.1.1)
      5. Network Protocols and Standards (3.2)
        1. Protocols (3.2.1)
        2. Protocol Suites (3.2.2)
        3. Standard Organizations (3.2.3)
        4. Reference Models (3.2.4)
      6. Data Transfer in the Network (3.3)
        1. Data Encapsulation (3.3.1)
        2. Data Access (3.3.2)
      7. Summary (3.4)
      8. Practice
      9. Check Your Understanding Questions
    12. Chapter 4. Network Access
      1. Objectives
      2. Key Terms
      3. Introduction (4.0)
      4. Physical Layer Protocols (4.1)
        1. Physical Layer Connection (4.1.1)
        2. Purpose of the Physical Layer (4.1.2)
        3. Physical Layer Characteristics (4.1.3)
      5. Network Media (4.2)
        1. Copper Cabling (4.2.1)
        2. UTP Cabling (4.2.2)
        3. Fiber-Optic Cabling (4.2.3)
        4. Wireless Media (4.2.4)
      6. Data Link Layer Protocols (4.3)
        1. Purpose of the Data Link Layer (4.3.1)
      7. Media Access Control (4.4)
        1. Topologies (4.4.1)
        2. WAN Topologies (4.4.2)
        3. LAN Topologies (4.4.3)
        4. Data Link Frame (4.4.4)
      8. Summary (4.5)
      9. Practice
      10. Check Your Understanding Questions
    13. Chapter 5. Ethernet
      1. Objectives
      2. Key Terms
      3. Introduction (5.0)
      4. Ethernet Protocol (5.1)
        1. Ethernet Frame (5.1.1)
        2. Ethernet MAC Addresses (5.1.2)
      5. LAN Switches (5.2)
        1. The MAC Address Table (5.2.1)
        2. Switch Forwarding Methods (5.2.2)
        3. Switch Port Settings (5.2.3)
      6. Address Resolution Protocol (5.3)
        1. MAC and IP (5.3.1)
        2. ARP (5.3.2)
        3. ARP Issues (5.3.3)
      7. Summary (5.4)
      8. Practice
      9. Check Your Understanding Questions
    14. Chapter 6. Network Layer
      1. Objectives
      2. Key Terms
      3. Introduction (6.0)
      4. Network Layer Protocols (6.1)
        1. Network Layer in Communications (6.1.1)
        2. Characteristics of the IP Protocol (6.1.2)
        3. IPv4 Packet (6.1.3)
        4. IPv6 Packet (6.1.4)
      5. Routing (6.2)
        1. How a Host Routes (6.2.1)
        2. Router Routing Tables (6.2.2)
      6. Routers (6.3)
        1. Anatomy of a Router (6.3.1)
        2. Router Boot-up (6.3.2)
      7. Configure a Cisco Router (6.4)
        1. Configure Initial Settings (6.4.1)
        2. Configure Interfaces (6.4.2)
        3. Configure the Default Gateway (6.4.3)
      8. Summary (6.5)
      9. Practice
      10. Check Your Understanding Questions
    15. Chapter 7. IP Addressing
      1. Objectives
      2. Key Terms
      3. Introduction (7.0)
      4. IPv4 Network Addresses (7.1)
        1. Binary and Decimal Conversion (7.1.1)
        2. IPv4 Address Structure (7.1.2)
        3. IPv4 Unicast, Broadcast, and Multicast (7.1.3)
        4. Types of IPv4 Addresses (7.1.4)
      5. IPv6 Network Addresses (7.2)
        1. IPv4 Issues (7.2.1)
        2. IPv6 Addressing (7.2.2)
        3. Types of IPv6 Addresses (7.2.3)
        4. IPv6 Unicast Addresses (7.2.4)
        5. IPv6 Multicast Addresses (7.2.5)
      6. Connectivity Verification (7.3)
        1. ICMP (7.3.1)
        2. Testing and Verification (7.3.2)
      7. Summary (7.4)
      8. Practice
      9. Check Your Understanding Questions
    16. Chapter 8. Subnetting IP Networks
      1. Objectives
      2. Key Terms
      3. Introduction (8.0)
      4. Subnetting an IPv4 Network (8.1)
        1. Network Segmentation (8.1.1)
        2. Subnetting an IPv4 Network (8.1.2)
        3. Subnetting a /16 and /8 Prefix (8.1.3)
        4. Subnetting to Meet Requirements (8.1.4)
        5. Benefits of Variable Length Subnet Masking (8.1.5)
      5. Addressing Schemes (8.2)
        1. Structured Design (8.2.1)
      6. Design Considerations for IPv6 (8.3)
        1. Subnetting an IPv6 Network (8.3.1)
      7. Summary (8.4)
      8. Practice
      9. Check Your Understanding Questions
    17. Chapter 9. Transport Layer
      1. Objectives
      2. Key Terms
      3. Introduction (9.0)
      4. Transport Layer Protocols (9.1)
        1. Transportation of Data (9.1.1)
        2. TCP and UDP Overview (9.1.2)
      5. TCP and UDP (9.2)
        1. TCP Communication Process (9.2.1)
        2. Reliability and Flow Control (9.2.2)
        3. UDP Communication (9.2.3)
        4. TCP or UDP (9.2.4)
      6. Summary (9.3)
      7. Practice
      8. Check Your Understanding Questions
    18. Chapter 10. Application Layer
      1. Objectives
      2. Key Terms
      3. Introduction (10.0)
      4. Application Layer Protocols (10.1)
        1. Application, Presentation, and Session (10.1.1)
        2. How Application Protocols Interact with End-User Applications (10.1.2)
      5. Well-Known Application Layer Protocols and Services (10.2)
        1. Web and Email Protocols (10.2.1)
        2. IP Addressing Services (10.2.2)
        3. File Sharing Services (10.2.3)
      6. Summary (10.3)
      7. Practice
      8. Check Your Understanding Questions
    19. Chapter 11. Build a Small Network
      1. Objectives
      2. Key Terms
      3. Introduction (11.0)
      4. Network Design (11.1)
        1. Devices in a Small Network (11.1.1)
        2. Small Network Applications and Protocols (11.1.2)
        3. Scale to Larger Networks (11.1.3)
      5. Network Security (11.2)
        1. Security Threats and Vulnerabilities (11.2.1)
        2. Network Attacks (11.2.2)
        3. Network Attack Mitigation (11.2.3)
        4. Device Security (11.2.4)
        5. Backup and Restore Configuration Files (11.2.5)
      6. Network Testing and Verification (11.3)
        1. The ping Command (11.3.1)
        2. The traceroute and tracert Command (11.3.2)
        3. Show Commands (11.3.3)
        4. Host and IOS Commands (11.3.4)
        5. Debugging (11.3.5)
      7. Network Troubleshooting (11.4)
        1. Troubleshooting Methodologies (11.4.1)
        2. Troubleshoot Cables and Interfaces (11.4.2)
        3. Troubleshooting Scenarios (11.4.3)
      8. Summary (11.5)
      9. Practice
      10. Check Your Understanding Questions
    20. Appendix A. Answers to the “Check Your Understanding” Questions
      1. Chapter 1
      2. Chapter 2
      3. Chapter 3
      4. Chapter 4
      5. Chapter 5
      6. Chapter 6
      7. Chapter 7
      8. Chapter 8
      9. Chapter 9
      10. Chapter 10
      11. Chpater 11
    21. Glossary
    22. Index
    23. Code Snippets